Internal Combustion Engine question

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Discussion Overview

The discussion revolves around the potential use of mono-crystal alumina in internal combustion engines (ICE), specifically considering its properties compared to aluminum and its implications for engine performance. The scope includes theoretical exploration and material properties relevant to engine components.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant proposes that mono-crystal alumina could replace aluminum in ICE, suggesting it might lead to a better engine due to its higher strength, despite the high manufacturing costs.
  • Another participant notes the availability of information on ceramics used in engines but emphasizes the lack of data specifically regarding mono-crystal alumina.
  • A third participant mentions that existing ceramics typically contain a maximum of 99.8% alumina, indicating a focus on purity in the discussion.
  • Additionally, a participant references historical experiments by Pratt-Whitney with single crystal turbine blades in aircraft engines, suggesting this could be relevant to the current topic.

Areas of Agreement / Disagreement

Participants express varying levels of interest and knowledge about the use of mono-crystal alumina in ICE, but there is no consensus on its feasibility or advantages, and the discussion remains exploratory.

Contextual Notes

Limitations include the lack of specific data on mono-crystal alumina's application in ICE, the dependence on definitions of purity, and the historical context of material use in engine components.

MattMaxwell
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Just out of curiosity, as I am very amateur here, in ICE could mono-crystal Alumina replace aluminum and create a better engine? Aside from the high cost to manufacture.

I know MC-Alumina has a higher density than Al but is considerably stronger. This would be fantastic, I would think for a methanol/ethanol based engine.
 
Engineering news on Phys.org
You will find a lot of interesting information about this subject if you search on :

Ceramic + (any of) Engines / Cylinder blocks / Cylinder heads / Pistons / Cylinder liners / Valves
 
Last edited:
Correct, however I do not see any information based on mono crystal. The ceramics used are usually at most 99.8% Alumina. I am sure this is due to a few reasons. My sole focus is on purity (9n plus).
 
i think Pratt-Whitney experimented with single crystal aircraft engine turbine blades in 1970's.

Add that name to your literature search ?
 

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